Stainless is not really necessary I guess guys if it's started everyday. It's only when cars sit for days without being started that condensation builds and water sits inside at the low point and causes corrosion . Other than that stainless is only for aesthetics IMO and how often are we gunna slide under our cars to look (unless it's a show car ofcourse ). Then there's the upkeep. They look like mandrels to me rob.